Here's a breakdown:

Classical Physics:

* Deals with the macroscopic world (objects that are large enough to be seen with the naked eye).

* Based on the laws of motion and gravity discovered by Newton.

* Includes:

* Mechanics: Describes the motion of objects and the forces that act on them.

* Thermodynamics: Studies heat and temperature and their relation to energy and work.

* Electromagnetism: Deals with electric and magnetic phenomena, including light.

* Optics: Studies the behavior and properties of light.

* Acoustics: Deals with sound and its properties.

Modern Physics:

* Deals with the microscopic world (atoms, nuclei, and subatomic particles).

* Emerged in the early 20th century with the development of quantum mechanics and relativity.

* Includes:

* Quantum Mechanics: Describes the behavior of matter and energy at the atomic and subatomic level.

* Relativity: Deals with the relationship between space, time, gravity, and the speed of light.

* Nuclear Physics: Studies the structure and properties of atomic nuclei.

* Particle Physics: Investigates the fundamental building blocks of matter.

It's important to note that the distinction between Classical and Modern Physics isn't always rigid. Many areas of physics combine elements of both. For example, quantum mechanics is used to explain the behavior of electrons in solid-state physics, a field that is largely considered part of classical physics.